com.isotrol.impe3.web20.client.content.counter.GreatestHitsComponent.java Source code

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Here is the source code for com.isotrol.impe3.web20.client.content.counter.GreatestHitsComponent.java

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/**
 * This file is part of Port@l
 * Port@l 3.0 - Portal Engine and Management System
 * Copyright (C) 2010  Isotrol, SA.  http://www.isotrol.com
 *
 * Port@l is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Port@l is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Port@l.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.isotrol.impe3.web20.client.content.counter;

import java.util.List;
import java.util.Map;

import com.google.common.base.Predicates;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.isotrol.impe3.api.ContentKey;
import com.isotrol.impe3.api.ContentType;
import com.isotrol.impe3.api.ContentTypes;
import com.isotrol.impe3.api.Pagination;
import com.isotrol.impe3.api.component.Component;
import com.isotrol.impe3.api.component.ComponentResponse;
import com.isotrol.impe3.api.component.Extract;
import com.isotrol.impe3.api.component.Inject;
import com.isotrol.impe3.api.content.Content;
import com.isotrol.impe3.api.content.ContentCriteria;
import com.isotrol.impe3.api.content.ContentLoader;
import com.isotrol.impe3.api.content.Listing;
import com.isotrol.impe3.dto.ServiceException;
import com.isotrol.impe3.nr.api.NodeKey;
import com.isotrol.impe3.support.listing.ContentListingPage;
import com.isotrol.impe3.web20.api.CounterFilterDTO;
import com.isotrol.impe3.web20.api.CountersService;
import com.isotrol.impe3.web20.api.ResourceCounterDTO;

/**
 * Greatest hits component.
 * @author Andres Rodriguez
 */
public class GreatestHitsComponent implements Component {
    /** Module configuration. */
    private ContentCounterConfig config;
    /** Counters service. */
    private CountersService service;
    /** Content types. */
    private ContentTypes contentTypes;
    /** Content loader. */
    private ContentLoader loader;
    /** Listing. */
    private Listing<Content> listing;

    /** Default constructor. */
    public GreatestHitsComponent() {
    }

    public void setConfig(ContentCounterConfig config) {
        this.config = config;
    }

    public void setService(CountersService service) {
        this.service = service;
    }

    public ComponentResponse execute() {
        final Pagination pag = new Pagination(config.pageSize(), null);
        listing = ContentListingPage.empty(pag);
        // Fetch resources
        final CounterFilterDTO filter = new CounterFilterDTO();
        filter.setCounterType(config.counterType());
        List<ResourceCounterDTO> resources;
        try {
            resources = service.getGreatestHits("", filter, Math.max(1, config.pageSize()));
        } catch (ServiceException e) {
            // TODO log
            return ComponentResponse.OK;
        }
        if (resources == null || resources.isEmpty()) {
            // Nothing to do
            return ComponentResponse.OK;
        }
        // Turn resources into keys
        final List<ContentKey> keys = Lists.newArrayListWithExpectedSize(resources.size());
        for (ResourceCounterDTO resource : Iterables.filter(resources, Predicates.notNull())) {
            final ContentKey ck = r2ck(resource.getResource());
            if (ck != null) {
                keys.add(ck);
            }
        }
        if (keys.isEmpty()) {
            // Nothing to do
            return ComponentResponse.OK;
        }
        // Perform the search
        ContentCriteria cc = loader.newCriteria();
        cc.setBytes(true);
        Map<ContentKey, Content> map = loader.newCriteria().setBytes(true).getContents(keys);
        if (map.isEmpty()) {
            // Nothing found
            return ComponentResponse.OK;
        }
        // Turn to listing
        final List<Content> contents = Lists.newArrayListWithExpectedSize(keys.size());
        for (ContentKey ck : keys) {
            final Content c = map.get(ck);
            if (c != null) {
                contents.add(c);
            }
        }
        listing = new ContentListingPage(null, pag, contents);
        return ComponentResponse.OK;
    }

    private ContentKey r2ck(String r) {
        if (r == null) {
            return null;
        }
        try {
            NodeKey nk = NodeKey.of(r);
            if (!contentTypes.containsKey(nk.getNodeType())) {
                return null;
            }
            final ContentType ct = contentTypes.get(nk.getNodeType());
            return ContentKey.of(ct, nk.getNodeId());
        } catch (Exception e) {
            return null;
        }
    }

    @Inject
    public void setLoader(ContentLoader loader) {
        this.loader = loader;
    }

    @Inject
    public void setContentTypes(ContentTypes contentTypes) {
        this.contentTypes = contentTypes;
    }

    @Extract
    public Listing<Content> getListing() {
        return listing;
    }
}